Wheel or pulley



R. H. ROGERS.

WHEEL 0R PULLEY.

APPLlcATloN FILED APR.23, 1918.

1,34,5 1 1 Patented July 13, 1920.

' 3 SHEETS-SHEET l.

l R. R. ROGERS.

WHEEL 0R PULLEY.

APPLICA Tl0N FILED APR.23, 1918.

Patented July 13, 1920.

3 SHEETS SHEET 2T II.l II. ROGERS.

WHEEL 0R PULLEY.

APPLICATION FILI-:D APR.23. 191B.

1,3465 1 1 l Patented .my 13, 1920.

3 SHEETS-SHEET 3.

UNITED STATES OFFlCE.

RICHARD HAWKE ROGERS, OF LONDON, ENGLAND.

WHEEL OR PULLEY.

Specification of Letters Patent.

Patented July 13, 1920.

.Application filed April 23, 1918. Serial No. 23,365.

To all whom t may concern.'

Be it known that l, RICHARD l-lAwnn Roenes, a subject of the King of England, residing at London9 England, have invented certain new and useful lmprovements in Wheels or Pulleys; of which the following is a specification.

This invention relates to cheap and light wheels or pulleys and a process of making the same from sheet material, for instance from pressed sheet-steel.

The principal object of the present invention is to make end-plates for the pulleys available without alteration to be used in combination with more than one diameter of cylindrical body 'for the wheel.

A method of making Wheels and pulleys according to the present invention comprises the following steps:-Enddisks are formed by making pairs of similar plates with central and; if desired, other'holes in one or both plates, bending or stamping on each plate an upstanding annular corrugation both of the same form and dimensions, then taking a strip or ribbon of appropriate length and width and of a flat or channeled or other Jform in cross-section as may be desired according as the pulley-barrel is to be grooved or not or cambered or otherwise formed, and bending it into the form of a cylinder of the desired diameter; neXt the corrugated end-plates are placed against the respective ends of that cylinder so that (according to the diameter chosen for the cylinder) the margin of the two cylinderends shall be received in the cavities of the respective annular corrugations when the cavities are presented toward them, or alternatively shall be received upon the outer shoulders or against the inner shoulders of the annular corrugations when the plates are so faced that the cavities face away from the cylinder-ends. Any pair of such endplates with a single corrugation on each is thus available without alteration to receive either a cylinder which has a diameter equal to that of the annulus constituted by the corrugation cavity, or one which has a diameter a little larger, and equaling that of the annulus constituted by the outer shoulder of the same corrugation, or a little smaller and equaling that of the annulus constituted by the inner shoulder of the same corrugation. y

In the foregoing description of the method, end-plates suitable to three diii'erent diameters of cylinder are described for the sake of simplicity, but the present invention comprises also an ampliiication oi the same method which consists in making on each end-plate a plurality of annular corrugations concentric with one another with the summits of. the corrugations directed in opposite directions from opposite sides of the same plate. Preferably these corruga tions are waved in cross-section in such a manner that the summit of a wave on one face of a plate corresponds with the hollow between two waves which project on the opposite face. With four summits on one side of the plate and three summits on the other, a pair of plates can be used to accommodate nine diierent diameters of cylinder; hence it will be seen that a simultaneous manufac ture of end-plates all of one sort will serve for a multiplicity of different/sizes of cylinders. The method is equally applicable should coned pulleys be required, in which case the body of the pulley instead of being a cylinder, will be made by folding in a manner well understood a iiat arc of sheet metal into conical form and engaging a smaller end of the hollow cone with the corrugation of one end-plate and the larger end with the corrugation of the other end-plate.

ln the accompanying drawings Figure l is a side elevation of a pulley constructed according to the present invention, in place on a shaft;

Fig. 2 is a vertical central section on the line 2-2 in Fig. l;

Fig. 3 is a view similar to Fig. 1 with an alternative form of pulley-boss and an alternative arrangement of the end-plates oi' the pulley;

Fig. 4 is a section on the line it-4l of Fig. 3;

Fig.5 is a view similar to Fig. 2 but with a coned instead of a cylindrical barrel for the pulley;

Fig. 6 is a iiat are oi: sheet-metal before it is bent into the cone seen in place in Fig. 5;

Fig. 7 is a side elevation of a cylindrical pulley having end-plates in each of which there is a multiplicity of grooves;

Fig. 8 is a section on the line 8-8 in Fig. 7 l

Fig. 8a is a view of a i'lat strip of sheetmetal which is bent into circular form and `Figs. 7 and 8; and

forms the barrel of the pulley shown in Fig. 9 is a view similar to Fig. 8 wherein the same end-platesas are seen in Fig. 8 are combined with a channeled circular strip, which latter forms a grooved Vbody for the pulley.v Y v Fig vl() is a Vview similar to Fig. 7 eXL cept that in Fig. l a triangular plate for Vkeeping the nuts from turning Ais employed as hereinafter described.

Like reference-letters indicate like parts throughout the drawings. Y

'in the pulley shown in Figs. l and 2 the cndplatesl are identical with one another and they hold inthe corrugations c on each plato the ends of the cylinder C of sheet-V metal which forms the bodyfof the pulley.

ln the pulley shown in F igsf and 4f the end-plates E which are identical with. one another, have the summits of their corrugations c directed toward one another so that they can engage the opposite ends of either a cylinder C resting upon the outer shoulders of the corrugations c, or of a cylinder C1 which is shown in chain-lines as resting upon the inner shoulders of the same corrugations. Y

ln thepulley shown in Fig. 5 there are two endplates E identical with one another and having identical corrugations c on each plate, the summits of the corrugations be-l ing directed both in the same direction and a coned barrel K being engaged at one end in the recess of one corrugation, and at the two end-plates such as are shown in Fig. 8.'

In the pulley shown in Fig. 9 there is a channeledV strip, bent into acylinder C .in

whichY the channel provides a groove g, say

v for a band.

'A cone K is shown in Fig. 9 in chainlines to indicate the manner in which the same two end-plates E, E of Fig. 9 could form part of a cone pulley. Various dimensions of cone could-be accommodated between thetwo endplates E, E' vof Fig. 8

' or of Fig. 9, instead of various diameters of cylinder. e

A boss B, Figs. 2, 5, 8A or 9 can be placed in the interior of the cylinder orcone before *theV end-plates E are put on, and it serves as a distance-piece for them. This boss may have a centralbore and projecting end-rings r, the latter to'center a conplates E and the boss B to hold them all V together; the holes for these bolts may be made in the end-plates E when the corrugations are stamped. Instead of making holes in the boss for the bolts, slots 8 may be made in the exterior of the boss in which the shanks of the bolts will lie,- and the body of the boss between these exterior slotsV instead of being left cylindrical, as in Figs. l and 7 may be cut away so that the boss assumes the triangular form, as illustrated by the boss B1 in Figs. 3 and 4, lighter than the cylindrical form. If pre-V ferred the central hole in each end-plate E, may be made as large as is'indicated by chain-lines in Fig. 8 andthere should then be three semi-circular recesses at l, 2 and 3 in the periphery of the hole, arranged to engage the bolts lying in the three slots in Y the boss B1 so as to afford driving connection between the boss and the plates.

The boss may have the usualkey-way in lit, or may have Wa radial hole for a grubscrew GS to hold it on the shaft. A hole H may be made in the cylindrical portion of the pulley to enable access to be had to this screw.

rlhe ends of the ribbon or sheet forming the pulley-body where they meet vone another may havel lateral tabs T to engagein slots S formed in the end-plates which will keep it from unwinding, or they may be internally butt-strapped and riveted or they may be sweated together or otherwise 'se cured to one another as may be'desired.

ln Figs. 8 and 9, spring washers sw are 105 shown, which keep the nuts on the bolts b from turning; but they might be kept from turning by any other convenient means, for instance by the bent-up tips t of a flat triangular plate TP through which plate the 110 Vbolts ZJ pass,pas shown in Fig. 10.

lhat I claim as my invention and desire to secure by Letters Patent is 1. A pulley comprising similar end-disks, each disk having waved annular-corrugations on both faces of the plate and being provided with 'tab-receiving slots, and a strip of rigid sheet material with lateral tabs bent into tubular form with the opposite ends ofthe tube clamped betweenfthe faces of the disks and engaged by the corrugations Vthereof and with the lateral tabs engaged in the tab-receiving slots.

Y 2. Ai pulley comprising similar end-disks, which are provided each with a waved annular corrugation and are arranged with the summits of the corrugations directedtoward one another, and a coned tubular member clamped between the faces of the disks and seated upon the corrugation thereof.

3. A pulley comprising similar end-disks, which are provided each with a plurality of waved annular corrugations and are arranged with the summits of the corrugations directed toward one another, and a coned tubular member clamped between the faces of the disks and seated at one end upon a corrugation of smaller diameter' of the one disk and at the other end upon a corrugation of larger diameter of the other disk.

4i. A pulley comprising similar enddisks, which are provided each with a waved annu lar corrugation and a tab-receiving slot and are arranged with the summits of the corrugations directed toward one another, and a tubular member having' a tab at each end thereof clamped between the faces of the disks and seated upon the corrugations thereof and with the tabs engaged each in a tab-receiving' slot.

5. A pulley comprising similar end-disks, whereof each disk has an annular corrugation, and a taba'eceivinpslot, and a strip of rigid sheet material with lateral tabs bent into the form of a t'iibular member with the opposite ends of the tubular member clamped between the faces of the disks and supported by the corrugations thereof and with the lateral tabs engaged each in a tabreceiving slot.

G. A pulley comprising similar end disks, each disk having an annular corrugation, and an arcuate strip of rigid sheet material 7. A pulley comprising similar end disks,

whereof each disk has an annular corrugation and is provided with tab-receiving slots at various distances from the center thereof, and an arcuate strip of rigid sheet material with lateral tabs bent into coned tubular form with the opposite ends of the tube clamped between the faces of the disks and supported by the corrugations thereof and with the lateral tabs engaged each in a tabreceiving slot.

8. A pulley comprising' similar end-disks, whereof each disk has an annular corrugation and is provided with tab-receiving slots at various distances from the center thereof, and an arcuate strip of ri gid sheet material with lateral tabs bent into coned tubular form with the opposite ends of the tube clamped between the faces of the disks and engaged in thel corrugatipn of one disk and seated on the corrugation of the other disk and with the lateral tabs engaged each in a tab-receiving slot.

In testimony whereof I affix my sienature.

RICHARD Hawks Resinas.

Witnesses:

l?. J. SAMrsoN, F. MOORE. 

